/* Copyright  2009
   @Author
   Richard Changde Yin            e-mail yinchangde@hotmail.com

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
   
/**
 * @filename: acos.h
 */ 

#ifndef COLLAPSAR_FUNCTION_MATH_ACOS_H
#define COLLAPSAR_FUNCTION_MATH_ACOS_H

#include <function/func.h>
#include <function/math/dec.h>

class Item_func_acos :public Item_dec_func
{
public:
  Item_func_acos(Item *a) :Item_dec_func(a) {}
  
  double val_real();
  
  const char *func_name() const { return "acos"; }
};

#endif /* COLLAPSAR_FUNCTION_MATH_ACOS_H */
